Galileo BOC(1,1) Prototype Receiver Development

Neil Gerein, Michael Olynik and Michael Clayton

Abstract:	In February 2004, the EU and the US reached an agreement on the baseline signal structure to be used in Galileo. Of particular interest to receiver manufacturers is the open service Binary Offset Carrier BOC(1,1) modulation format to be transmitted at the L1 frequency. In preparation for the transmission of the first Galileo signals from space, NovAtel initiated development of their first prototype Galileo receiver, capable of tracking BOC(1,1) signals. NovAtel has successfully completed a contract with the Canadian Space Agency (CSA) to develop an FPGA based prototype of a Galileo BOC(1,1) receiver. The receiver is based on NovAtel’s new FPGA based precise positioning receiver, the Euro-L5. The receiver FPGA and software is configured to track the open service BOC(1,1) signal that will be transmitted on the Galileo L1 frequency. To reduce hardware design costs for this preproduction prototype development, the design was demonstrated at the L5/E5a frequency. No commercial Galileo hardware simulators are currently available to test the receiver. NovAtel modified an L5 signal transmitter, developed by NovAtel for Zeta Associates of Fairfax, Virginia, to output BOC(1,1) and BPSK(1) test signals. An overview of the NovAtel Euro-L5 FPGA based precise positioning receiver will be presented. The CSA sponsored BOC(1,1) receiver/transmitter development effort will be discussed. The expected results for the pseudorange noise will be derived for the BPSK and BOC signals. Test results of the prototype BOC(1,1) receiver will be presented and compared with performance results from a BPSK(1) receiver and the expected results.
Published in:	Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004) September 21 - 24, 2004 Long Beach Convention Center Long Beach, CA
Pages:	2604 - 2610
Cite this article:	Gerein, Neil, Olynik, Michael, Clayton, Michael, "Galileo BOC(1,1) Prototype Receiver Development," Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004), Long Beach, CA, September 2004, pp. 2604-2610.
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